Molecular structure and catechol oxidase activity of a new copper(I) complex with sterically crowded monodentate N-donor ligand

被引：52
|
作者：
Kupan, Adam [1 ]
Kaizer, Jozsef [1 ]
Speier, Gabor [1 ]
Giorgi, Michel [2 ,3 ]
Reglier, Marius
Pollreisz, Ferenc [4 ]
机构：
[1] Univ Pannonia, Dept Chem, H-8200 Veszprem, Hungary
[2] Univ Aix Marseille 3, Cristallochim Lab, F-13397 Marseille 20, France
[3] Univ Aix Marseille 3, Lab Bioinorgan Struct, F-13397 Marseille 20, France
[4] Hungarian Acad Sci, Inst Struct Chem, Chem Res Ctr, H-1025 Budapest, Hungary
来源：
JOURNAL OF INORGANIC BIOCHEMISTRY | 2009年 / 103卷 / 03期
关键词：
Catechol; Catechol oxidase; Biomimetic oxidation; Copper complexes; N-ligand; RAY CRYSTAL-STRUCTURES; OXYGEN-BINDING SITE; DINUCLEAR COPPER; CATALYTIC-PROPERTIES; FUNCTIONAL MODELS; 3,4-DIHYDROXYPHENYLACETATE 2,3-DIOXYGENASE; DICOPPER(II) COMPLEX; MAGNETIC-PROPERTIES; GLOBIFORMIS CM-2; CU(II) COMPLEXES;
D O I：
10.1016/j.jinorgbio.2008.11.015
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The attempted alkylation of 1,3-bis(2'-pyridylimino)isoindoline (indH) by the use of n-BuLi and subsequent alkyl halides led to quaternization of the pyridine nitrogens and the zwitterionic monodentate N-ligand (Me(2)ind)I was formed. By the use of the ligand the copper(I) complex [Cu-I(Me(2)ind)I-2] was prepared and its structure determined. It was found to be good catalyst for the oxidation of 3,5-di-tert-butyl-catechol (DTBCH2) to 3,5-di-tert-butyl-1,2-benzoquinone (DTBQ) and H2O2 by dioxygen. Detailed kinetic Studies revealed first-order dependence on the catalyst and dioxygen concentration and saturation type behavior with respect to the substrate. (C) 2008 Published by Elsevier Inc.
引用
收藏
页码：389 / 395
页数：7
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